[单项选择]Sentence Completion
According to one optimistic hypothesis, the dense concentration of entrepreneurs and services in the cities would incubate new functions, ______ them, and finally export them to other areas, and so the cities, forever breeding fresh ideas, would ______themselves repeatedly.
A. immunize...perpetuate
B. isolate...revitalize
C. foster...deplete
D. spawn...imitate
E. (E) nurture...renew

[填空题]In the last sentence of the last but one paragraph, the author wrote "What deathless power lies in the hands of such a person." "such a person" refers to somebody______.

[单项选择]What does the sentence "There is no one but longs to go to college. " mean
A. Every one longs to go to college.
B. No one longs to go to college.
C. Some one longs to go to college.
D. Not every one longs to go to college.

[单项选择]

In one very long sentence, the introduction to the U. N. Charter expresses the ideals and the common aims of all the people whose governments joined together to form the U. N.
"We the people of the U. N. determined to save succeeding generations from the scourge of war which twice in our lifetime has brought untold suffering to mankind, and to reaffirm faith in fundamental rights, in the dignity and worth of the human person, in the equal rights of men and women and of nations, large and small, and to establish conditions under which justice and respect for the obligations arising from treaties and other sources of international law can he maintained, and to promote social progress and better standards of life in larger freedom, and for these ends, to practise tolerance and live together in peace with one another as good neighbours, and to unite our strength to maintain international peace and security, and to ensure, by the acceptance of principles and the instituti
A. have a stronger voice than other countries
B. have more freedom in the U. N.
C. can use force against other states
D. have the same rights and duties as other members